This application discloses a resource configuration method and an apparatus. The method includes: obtaining, by a terminal device, configuration information, where the configuration information includes at least one piece of the following information: random access resource configuration information and downlink signal parameter information; and accessing, by the terminal device, a network device based on the configuration information. A corresponding apparatus is also disclosed.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, comprising: obtaining, by a terminal device, random access configuration information, wherein the random access configuration information comprises one or more pieces of following information: a preamble format, a system frame number (SFN) of random access resources, a subframe number of the random access resources, a start orthogonal frequency division multiplexing (OFDM) symbol for the random access resources, random access preamble grouping information, a subcarrier spacing, a starting position of a frequency where the random access resources are located, or timing advance (TA); receiving, by the terminal device, a first downlink signal of a plurality of downlink signals; determining, by the terminal device, a first random access resource during a time period T RA based on association of the first random access resource with the first downlink signal, wherein the T RA is an association period during which the random access resources allocated are associated with the plurality of downlink signals, and a period of association relationship between the random access resources and the plurality of downlink signals is the T RA ; and transmitting, by the terminal device, a random access preamble to a network device in the first random access resource: and wherein a SFN where a start location of the random access resources is located satisfies following formula: Mod (SFN, T RA /10 ms)=N,N is a non-negative integer less than T RA /10 ms, and Mod is a modulo operation.
2. The method according to claim 1 , wherein the first downlink signal is a synchronization signal/physical broadcast channel (SS/PBCH) or channel state information-reference signal (CSI-RS) received from the network device, and wherein the random access resources are random access channel occasions (RACH occasions).
3. The method according to claim 1 , wherein a value of the T RA is 2 n *5 millisecond (ms), and n is an integer between 0 and 9.
4. The method according to claim 1 , wherein the T RA has a value that is one of a plurality of candidate values, and the plurality of candidate values include one or more of following values: 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, or 640 ms.
5. The method according to claim 1 , wherein when the random access configuration information includes the SFN of the random access resources, the SFN of the random access resources satisfies at least one of following formulas: Mod (SFN,2)=0, Mod (SFN,2)=1; Mod (SFN,4)=0, Mod (SFN,4)=1, Mod (SFN,4)=2, Mod (SFN,4)=3; Mod (SFN,8)=0, Mod (SFN,8)=1, Mod (SFN,8)=2, Mod (SFN,8)=3, Mod (SFN,8)=4, Mod (SFN,8)=5, Mod (SFN,8)=6, Mod (SFN,8)=7; or Mod (SFN,16)=0, Mod (SFN, 16)=1, Mod (SFN, 16)=2, Mod (SFN, 16)=3, Mod (SFN, 16)=4, Mod (SFN, 16)=5, Mod (SFN, 16)=6, Mod (SFN, 16)=7; and Mod is a modulo operation.
6. The method according to claim 1 , further comprising: determining, by the terminal device, the random access preamble based on the random access configuration information.
7. The method according to claim 6 , further comprising: receiving, by the terminal device, an index of the first downlink signal.
8. The method according to claim 1 , further comprises: determining, by the terminal device based on the random access configuration information, the T RA .
9. The method according to claim 1 , wherein the N is 0.
10. An apparatus for resource configuration, comprising: one or more memories configured to store instructions; and one or more processors coupled to the one or more memories and configured to execute the instructions to cause the apparatus to: obtain random access configuration information, wherein the random access configuration information comprises one or more pieces of following information: a preamble format, a system frame number (SFN) of random access resources, a subframe number of the random access resources, a start orthogonal frequency division multiplexing (OFDM) symbol for the random access resources, random access preamble grouping information, a subcarrier spacing, a starting position of a frequency where the random access resources are located, or timing advance (TA); receive a first downlink signal of plurality of downlink signals; determine a first random access resource during a time period T RA based on association of the first random access resource with the first downlink signal, wherein the T RA is an association period during which the random access resources allocated are associated with the plurality of downlink signals, and a period of association relationship between the random access resources and the plurality of downlink signals is the T RA ; and transmit a random access preamble to a network device in the first random access resource: and wherein a SFN where a start location of the random access resources is located satisfies following formula: Mod (SFN, T RA /10 ms )=N, N is a non-negative integer less than T RA /10 ms, and Mod is a modulo operation.
11. The apparatus according to claim 10 , wherein the first downlink signal is a synchronization signal/physical broadcast channel (SS/PBCH) or channel state information-reference signal (CSI-RS) received from the network device, and the random access resources are random access channel occasions (ROs).
12. The apparatus according to claim 10 , wherein a value of the T RA is 2 n *5 millisecond (ms), and n is a integer between 0 and 9.
13. The apparatus according to claim 10 , wherein the T RA has a value that is one of a plurality of candidate values, and the plurality of candidate values include one or more of following values: toms, 20 ms, 40 ms, 80 ms, 160 ms, or 640 ms.
14. The apparatus according to claim 10 , wherein when the random access configuration information includes the SFN of the random access resources, the SFN of the random access resources satisfies at least one of following formulas: Mod (SFN,2)=0, Mod (SFN,2)=1; Mod (SFN,4)=0, Mod (SFN,4)=1, Mod (SFN,4)=2, Mod (SFN,4)=3; Mod (SFN,8)=0, Mod (SFN,8)=1, Mod (SFN,8)=2, Mod (SFN,8)=3, Mod (SFN,8)=4, Mod (SFN,8)=5, Mod (SFN,8)=6, Mod (SFN,8)=7; or Mod (SFN,16)=0, Mod (SFN, 16)=1, Mod (SFN, 16)=2, Mod (SFN, 16)=3, Mod (SFN, 16)=4, Mod (SFN, 16)=5, Mod (SFN, 16)=6, Mod (SFN, 16)=7; and Mod is a modulo operation.
15. The apparatus according to claim 10 , the one or more processors are further configured to execute the instructions to cause the apparatus to: determine the random access preamble based on the random access configuration information.
16. The apparatus according to claim 10 , wherein the one or more processors are further configured to execute the instructions to cause the apparatus to: receive an index of the first downlink signal.
17. The apparatus according to claim 10 , the one or more processors are further configured to execute the instructions to cause the apparatus to: determine the T RA based on the random access configuration information.
18. The apparatus according to claim 10 , wherein the N is 0.
19. The apparatus according to claim 10 , wherein the random access configuration information further comprises: a quantity of random access resources associated with a downlink signal, or, indexes of random access resources associated with the downlink signal.
20. A computer program product comprising a non-transitory computer-readable medium storing computer executable instructions that, when executed by a processor, instruct the processor to implement a method comprising: obtaining random access configuration information, wherein the random access configuration information comprises one or more pieces of following information: a preamble format, a system frame number (SFN) of random access resources, a subframe number of the random access resources, a start orthogonal frequency division multiplexing (OFDM) symbol for the random access resources, random access preamble grouping information, a subcarrier spacing, a starting position of a frequency where the random access resources are located, or timing advance (TA); receiving a first downlink signal of a plurality of downlink signals; determining a first random access resource during a time period T RA based on association of the first random access resource with the first downlink signal, wherein the T RA is an association period during which the random access resources allocated are associated with the plurality of downlink signals, and a period of association relationship between the random access resources and the plurality of downlink signals is the T RA ; and transmitting a random access preamble to a network device in the first random access resource: and wherein a SFN where a start location of the random access resources is located satisfies following formula: Mod (SFN, T RA /10 ms)=N, N is a non-negative integer less than T RA /10 ms, and Mod is a modulo operation.
21. The computer program product according to claim 20 , wherein the first downlink signal is a synchronization signal/physical broadcast channel (SS/PBCH) or channel state information-reference signal (CSI-RS) received from the network device, and wherein the random access resources are random access channel occasions (RACH occasions).
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
November 5, 2019
March 29, 2022
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